100% Flat-Free ?

The Amerityre ‘no air’ polyurethane tyre. Forget the Tweel, this looks like it could be cheaper, more robust and quicker to market. Only as a spare tyre at the moment, though.

The advantages of the “zero pressure” tire are as follows: Reliability: Solid polyurethane elastomer construction does not require high pressure to carry vehicle load, and provides the consumer with an “always ready” solution in the event of regular tire failure. Durability: Polyurethane elastomer material performance meets or exceeds performance required of comparable rubber high pressure spare tire and will provide safe travel for over 2,000 miles at 50 mph. Safety: May be placed in the rear of the vehicle in close proximity to the vehicle’s fuel tank without creating risk of tire explosion due on rear-end impact.